Effects of Substituents on the Electrocatalytic Activity of Cobalt Phthalocyanines when Conjugated to Graphene Quantum Dots,Electroanalysis

当前位置： X-MOL 学术 › Electroanalysis › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Effects of Substituents on the Electrocatalytic Activity of Cobalt Phthalocyanines when Conjugated to Graphene Quantum Dots
Electroanalysis ( IF 2.7 ) Pub Date : 2017-08-11 , DOI: 10.1002/elan.201700252
Sixolile Centane ₁ , Ojodomo J. Achadu ₁ , Tebello Nyokong ₁

Affiliation

We report on the π–π interactions between graphene quantum dots (GQDs) and the following cobalt phthalocyanine derivatives: cobalt monocarboxyphenoxy phthalocyanine (complex 1), cobalt tetracarboxyphenoxyphthalocyanine (complex 2), and cobalt tetraaminophenoxy phthalocyanine (complex 3). The conjugates (conj) with GQDs are represented as 1@GQDs(conj), 2@GQDs(conj) and 3@GQDs(conj), respectively. The resulting phthalocyanine/GQDs conjugates were adsorbed on containing a glassy carbon electrode (GCE) using the drop and dry method. We explore the electrochemical properties of phthalocyanines functionalized with both electron withdrawing groups and electron donating groups when non-covalently linked to the π-electron rich graphene quantum dots. GCE/3, GCE/2@GQDs(conj) and GCE/1@GQDs(conj) had the lowest limits of detection (LOD). Sequentially modified electrodes showed less favourable detection limits compared to the conjugates.

中文翻译：

与石墨烯量子点共轭时，取代基对钴酞菁电催化活性的影响

我们报告了石墨烯量子点 (GQD) 与以下钴酞菁衍生物之间的 π-π 相互作用：单羧基苯氧基酞菁钴（络合物 1）、四羧基苯氧基酞菁钴（络合物 2）和四氨基苯氧基酞菁钴（络合物 3）。与 GQD 的共轭 (conj) 分别表示为 1@GQDs(conj)、2@GQDs(conj) 和 3@GQDs(conj)。使用滴干法将所得酞菁/GQDs缀合物吸附在含有玻璃碳电极(GCE)上。我们探索了当与富含 π 电子的石墨烯量子点非共价连接时，用吸电子基团和给电子基团官能化的酞菁的电化学性质。GCE/3、GCE/2@GQDs(conj) 和 GCE/1@GQDs(conj) 的检测限 (LOD) 最低。

更新日期：2017-08-11

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11